Alectra Utilities is Ontario's largest municipally-owned electric utility, distributing electricity to approximately one million businesses and homes across ten communities in the Greater Golden Horseshoe region, including Barrie, Brampton, Guelph, Hamilton, Markham, Mississauga, Richmond Hill, St. Catharines, Vaughan, and Alliston. Formed in 2017 through the merger of PowerStream, Enersource, and Horizon Utilities, Alectra manages over 56,000 km of electricity distribution infrastructure and is jointly owned by its nine municipal shareholders.